Organic light emitting display device and method of manufacturing the same

Abstract

Provided are a method of manufacturing an organic light emitting display device and an organic light emitting display device manufactured by the method. The method includes calculating a peak-luminance current density for each of a red sub-pixel, a blue sub-pixel, a green sub-pixel, and a white sub-pixel, calculating an average use current density for each of the red sub-pixel, blue sub-pixel, green sub-pixel, and white sub-pixel; determining a size of each sub-pixel with the peak-luminance current density and the average use current density, and forming the sub-pixels with the determined sizes of the respective sub-pixels. The present invention sets the size of each sub-pixel in consideration of a peak-luminance current density and an average use current density, thus easily achieving the peak luminance and enhancing the color-coordinate life.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of the Korean Patent Application No. 10-2011-0139620 filed on Dec. 21, 2011, which is hereby incorporated by reference as if fully set forth herein.BACKGROUND[0002]1. Field of the Invention[0003]The present invention relates to an organic light emitting display device using organic light emitting diodes (OLEDs) and a method of manufacturing the same.[0004]2. Discussion of the Related Art[0005]Recently, with the advancement of multimedia, the importance of flat panel display (FPD) devices is increasing. Therefore, various FPD devices such as liquid crystal display (LCD) devices, plasma display panel (PDP) devices, field emission display (FED) devices, and organic light emitting display devices are being used practically. In such FPD devices, the organic light emitting display devices have a fast response time of 1 ms or less and low power consumption, and have no limitation in a viewing angle because the...

AI Technical Summary

Benefits of technology

The invention is about an organic light emitting display device and a method of manufacturing it. The method includes calculating peak luminance current density and average use current density for each sub-pixel, determining the size of each sub-pixel, and forming the sub-pixels in the determined size. The technical effect of this invention is that it provides an organic light emitting display device with both peak luminance and color-coordinate life, resulting in better color accuracy and a more lifelike display.

Problems solved by technology

According to the organic light emitting display device 10, in a sub-pixel which is the most used based on the frequency of use and an accumulated use time for each sub-pixel, a current density increases compared to the other sub-pixels, and thus, deterioration is rapidly made, thereby shortening the service life of a corresponding sub-pixel.

However, as described above, when the size of a blue sub-pixel is enlarged in order for the service lives of sub-pixels to become similar, it is impossible to realize the peak luminance of a pure color of each of the other sub-pixels.

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